PDP-427XD
8
1234
1234
C
D
F
A
B
E
1.3 JIGS LIST
CONTENTS
1. NOTES ON SERVICE VISIT.........................................................................................................................................2
1.1 SAFETY INFORMATION .......................................................................................................................................2
1.2 QUICK REFERENCE UPON SERVICE VISIT.......................................................................................................6
1.3 JIGS LIST ..............................................................................................................................................................8
2. EXPLODED VIEWS AND PARTS LIST ......................................................................................................................10
2.1 PACKING SECTION ............................................................................................................................................10
2.2 REAR SECTION ..................................................................................................................................................12
2.3 FRONT SECTION................................................................................................................................................14
2.4 CHASSIS SECTION (1/2)....................................................................................................................................16
2.5 CHASSIS SECTION (2/2)....................................................................................................................................18
2.6 PANEL CHASSIS SECTION................................................................................................................................20
2.7 MULTI BASE SECTION .......................................................................................................................................22
2.8 PDP SERVICE PANEL ASSY 427 (AWU1208) ...................................................................................................24
2.9 TABLE TOP STAND (PDP-4270XD and PDP-4270XA ONLY).............................................................................25
3. PCB PARTS LIST .......................................................................................................................................................26
4. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM......................................................................................................42
4.1 OVERALL WIRING DIAGRAM (1/2) ....................................................................................................................42
4.2 OVERALL WIRING DIAGRAM (2/2) ....................................................................................................................44
4.3 OVERALL BLOCK DIAGRAM (1/2) .....................................................................................................................46
4.4 OVERALL BLOCK DIAGRAM (2/2) .....................................................................................................................48
4.5 POWER SUPPLY UNIT........................................................................................................................................49
4.6 42 X DRIVE, SUS CLAMP 1 and SUS CLAMP 2 ASSYS ...................................................................................50
4.7 42 Y DRIVE ASSY ...............................................................................................................................................51
4.8 POWER SUPPLY BLOCK of 42 X DRIVE and 42 Y DRIVE ASSYS ...................................................................52
4.9 42 SCAN A and 42 SCAN B ASSYS ...................................................................................................................53
4.10 42 ADDRESS ASSY ..........................................................................................................................................54
4.11 42 DIGITAL ASSY..............................................................................................................................................55
4.12 SIGNAL BLOCK DIAGRAM ...............................................................................................................................56
4.13 R07 DT ASSY (PDP-4270XD and PDP-427XD ONLY) .....................................................................................58
4.14 POWER SUPPLY BLOCK of MAIN ASSY.........................................................................................................59
4.15 42E AUDIO ASSY..............................................................................................................................................60
4.16 POWER SUPPLY BLOCK of 42E AUDIO, LED IR and SIDE KEY ASSYS.......................................................61
4.17 VOLTAGES .........................................................................................................................................................62
4.18 WAVEFORMS ....................................................................................................................................................70
5. DIAGNOSIS................................................................................................................................................................74
5.1 TROUBLE SHOOTING ........................................................................................................................................74
5.1.1 FLOWCHART OF FAILURE ANALYSIS FOR THE WHOLE UNIT ................................................................74
5.1.2 FLOWCHART OF FAILURE ANALYSIS FOR THE POWER SUPPLY UNIT.................................................76
5.1.3 FLOWCHART OF FAILURE ANALYSIS FOR THE DIGITAL ASSY ..............................................................77
5.1.4 FLOWCHART OF FAILURE ANALYSIS FOR THE DRIVE ASSY.................................................................78
5.1.5 FLOWCHART OF FAILURE ANALYSIS FOR THE MAIN ASSY...................................................................82
5.1.6 FLOWCHART OF FAILURE ANALYSIS FOR THE VIDEO SYSTEM............................................................83
5.1.7 FLOWCHART OF FAILURE ANALYSIS FOR THE AUDIO SYSTEM ...........................................................90
5.2 DIAGNOSIS OF PD (POWER-DOWN)................................................................................................................93
5.2.1 BLOCK DIAGRAM OF THE POWER-DOWN SIGNAL..................................................................................93
5.2.2 DIAGNOSIS OF THE PD (POWER-DOWN) .................................................................................................94
5.3 DIAGNOSIS OF SD (SHUTDOWN).....................................................................................................................97
5.3.1 BLOCK DIAGRAM OF THE SHUTDOWN SIGNAL.......................................................................................97
5.3.2 SD (SHUTDOWN) DIAGNOSIS ....................................................................................................................98
5.4 INFORMATION ON SYMPTOMS THAT DO NOT CONSTITUTE FAILURE........................................................99
6. DISASSEMBLY.........................................................................................................................................................100
6.1 PCB LOCATION.................................................................................................................................................100
Cleaning
Name Part No. Remarks
Cleaning liquid GEM1004
Used to fan cleaning.
Refer to "2.4 CHASSIS SECTION (1/2).
Cleaning paper GED-008
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